Delhi Air Emergency: AQI In Severe Category 

NEW DELHI: Delhi recorded air quality in severe category on Wednesday, with pollution levels expected to rise to "severe plus" or "emergency" category later in the day.

The toxic haze returned to Delhi and its suburbs on Tuesday with raging stubble fires in neighbouring states, fall in the temperature and wind speed pushing the city's air quality in the "severe" zone.

The government's air quality monitor, System of Air Quality and Weather Forecasting and Research (SAFAR), said pollution levels in Delhi-NCR are expected to enter the "severe plus" or "emergency" category on Wednesday.

In the adjoining areas of Noida and Greater Noida, the Air Quality Index (AQI) was recorded at 472 and 462 respectively.

An AQI between 201 and 300 is 'poor', 301-400 'very poor' and 401-500 'severe' while the AQI above 500 falls in the severe plus category.

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